Joint for train-pipe connections.



J A. GORRIGAN & E. M. MORTIMER.

JOINT FOR TRAIN PIPE CONNECTIONS.

APPLICATION IILED MAY 29, 1913.

1,078,129, Patented Nov. 11, 1913.

nventorJ Altornuys UNITED STATES PATENT OFFICE.

JOHN ARTHUR CORR-IGAN, OF ST. PAUL, AND ELI AS M. MORTIMER, OF MTNNEAPOLIS,

MINNESOTA,

Specification of Letters Patent.

JOINT FOR TRAIN-PIPE CONNECTIONS.

Patented Nov. 1 1, 1 913.

Application filed May 29, 1913. Serial No. 770,731.

have invented a new and useful Joint for Train-Pipe Connections, of which the following is a specification.

The present invention appertains to train pipe connections, and relates particularly to an improved joint, therefor.

It'is the object of the present invention to provide a novel and improved device of the character indicated, the parts or members of which may have limited endwise movements relative to each other, and which are free to rotate with respect to each other. Another object of the present invention is to provide such a joint, including both a packing and a ground olnt t0 provlde a double a surance against leakage, and in order to lengthen the life of the packing.

A further object of the present invention is to provide a device of the character specified, the various parts of which may be readily assembled and separated.

It is also within the scope of the present invention to provide a joint of the character indicated which will be relatively simple, and inexpensive in construction, as well as serviceable, convenient and efficient in its use. I

lVith the foregoing and other objects in view which will be apparent as the description proceeds. the present invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

The invention has been illustrated in its preferred embodiment in the accompanying proved joints, indicated at 1, these joints permitting the sections or arms of the connection to yield under the several conditions to which the connection is subjected in use. The metallic connection is designed particularly for connecting train pipe sec tlons-of the locomotive and tender, although the connections as well as the joints may be employed in divers capacities.

Coming particularly to the improved joint, which has been illustrated in detail in Fig. 3, thesame embodies the female member or body 2, which is provided at its outer end with an integral elbow 3 for the attachment of'a pipe section, although the said end of the female member or body maybe constructed in any suitable manner for the attachment of a pipe section, as will be apparent. At the outer end of the body 2, the same is provided with an internal flange 4 providing a constricted opening, and the body 2 is further provided with an internal collar 5 at a point spaced slight-1y from the flange 4. A ring or annulus 6 is threaded onto the collar or shoulder 5 and is provided with aflange 7 adapted to seat against the inner side of the collar 5 to limit the outward movement ofthe ring 6, the flange 7 icing provided with one or more notches 7 for the engagement of a special wrench or implement for screwing the ring to position. The outer face of the ring 6 is preferably, although not necessarily, flush with the outer face of the collar 5. A male member or sleeve 8 is slidable snugly through the ring 6,, and has its outer end projecting from the inner end of the female member I or body 2, the inner end of the male memher or sleeve 8 being provided with an exterior flange 9 seata-ble against the ring 6. The adjoining faces of the ring 6 and flange 9 are ground or faced so as to have a tight fit when the female and male. members are moved longitudinally so as to expand. It

i is to be noted that the diameter of the flange 9 is slightly smaller than thatof the opening provided by the collar 5, in order that the male member or'sleeve 8 may be inserted into the inner or open end of the body 2 and through the collar 5, in which event, the ring 6 may be threaded into the collar to retain the male member or sleeve in position. The inner end of the male member or sleeve, or flange 9 thereof, is adapted to reciprocate or move freely within the chamber or space *10 provided between the flange 4: and the collar 5, the movements of the male and female members with respect to each other, however,'being limited by the said flange 4 and collar A flanged gland 11 is disposed over the sleeve 8 and enters a mouth or inner end of the body 2, a socket nut 12 being threaded onto the said end of the body 2 to force the gland 11 into the body so as to compress the packing 13 around the sleeve 8 between the ring 6 and the gland. The socket nut 12 snugly embraces the male member or sleeve 8 to provide a tight fit between the said nut and male member, so as to further preclude the egress or ingress of matter between the male and female members.

From the foregoing, taken in connection with the drawing, it will be evident that the improved joint is susceptible to both expansion and contraction, to a limited extent, the

, two parts or members of the joint being free to rotate with respect to each other. The end wise movements of the two parts of the joint with respect to each other are limited by the engagement of the flange 9 with the flange 4 and collar 5 of the body or female member 2, it being noted that the flange 9 -may rotate freely within the chamber or space 10 to permit. the two parts of the-joint to rotate with respect to each other without interference.

It is evident, without lengthy description, that the improved joint may be effectively employed in train connections, such as illustrated in Figs. 1 and 2, so as to permit the sections or arms of the train pipe connection to swing freely with respect to each other due to the rear movements of the locomotive and tender, or cars, with respect to each other. V

The packing 13 in being compressed against the male member will serve to preclude the egress of the pressure fluid, but does not restrict the endwise movements of the members of the joint with respectto each other, nor will the packing prevent the two parts of the joint from rotating freely with respect to each other. \Vhen the joint is subject to expansion, due to the passage of the pressure fluid therethrough, the male and female parts will be separated or extended, the flange 9 seating against the retaining'ring 6, whereby a primary means is provided for preventing the escape of the fluid, the ground faces and flange 9 and ring 6 abutting tightly to serve this function.

Ordinarily, when the flange 9 is seated against the ring 6, the pressure fluid is pre vented from escaping beyond the inner end of the sleeve 8, or the flange 9, so that the packing 13will be idle, the packing, however, preventing the esca e of fluid should the same work through t e ring 6 vfor any unforeseen cause. The joint is thus provided with a two-fold means for preventing the escape of fluid, and to provide a double assurance against leakage, and furthermore, the seating of the flange 9 against the retaining ring 6, willmaterially lengthen the life of the packing, which, ordinarily, is not subject to the action of the stem or other pressure fluid passing through the joint.

\Vhat is claimed as new is In a joint of the class specified, a female member having an internal flange and an elbow at one end, and an internal collar spaced slightly from the flange, a ring threaded into the said collar and having a flange seated against one side of the collar, a flanged gland fitting into the other end of the female member, a male member passing snugly through the gland and ring and having an exterior flange at its end movable between the first mentioned flange and ring and seatable against the ring, the flange of the male member being of less diameter than the opening provided by the collar, the adjoining faces of the last mentioned flange and ring being ground, packing disposed around the male member between the said ring and gland, and a socket nut threaded over the last mentioned end of the female member and snugly embracing the male member to force the gland inwardly.-

In testimony that we claim the foregoing JOHN ARTHUR CORRIGAN. ELIAS M. MORTIMER.

Witnesses ESTELLE FLEISSNER, E. H. PAYTE. 

